UNICORN OVERLORD - SNIPER DAMAGE CARRY TEAM [ROLF-DINAH-LIZA-SELVIE]

Dinah says at the start "This will be slow and painful" - and she is correct. The enemies are blinded, poisoned and can't do anything against a bulwark back row as they are feeling more and more desperate as a sniper aoe nuke is about to kill them all.
The neat thing is that since Dinah acts still first before the shaman means the enemies will likely cleanse poison - while the more devastating dbuff - the sandstorm is right to come.